Don't they have browser plugins? That's how use Lastpass on Ubuntu. I mean, besides Electron apps, who actually makes native Linux apps? (joking, not joking)
Yes. Though it was slow (slower than other extension based password managers), but worse, it was missing some of the features. I can't remember exactly what it was, but at one point I tried to edit something, but there was no way for me to add something. Though I've forgotten now, it felt quite a critical think to have at the time.
Our 1Password X extension works great on Linux. :) - Ben, 1Password